Understanding Lombok @Accessors Annotation: fluent, chain, and prefix attributes

Preface

In your work you may encounter the annotation @Accessors(chain = true) from the Lombok library and wonder what it does.

1. @Accessors source code

Opening the source of @Accessors reveals:

1) The annotation mainly controls how getter and setter methods are generated for fields.

2) When applied to a class, it affects all fields; when applied to a specific field, it only affects that field.

2. @Accessors attribute description

2.1 fluent attribute

If set to true, the generated getter does not have the get prefix and the setter does not have the set prefix.

2.2 chain attribute

If set to true, the setter returns the current object, enabling method chaining.

2.3 prefix attribute

This attribute is a string array; when it contains values, those prefixes are ignored when generating getter and setter names.

@Accessors(fluent = true, chain = true, prefix = {"m_", "_"})

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